Cabinet and energy storage apparatus

Abstract

The present disclosure provides a cabinet and an energy storage apparatus. The cabinet includes a concrete main body, a heat resistant layer, and a flame retardant layer. The concrete main body includes a plurality of walls to form an accommodating space. The heat resistant layer is disposed on one or more inner surfaces of the plurality of walls in the accommodating space. The flame retardant layer is disposed on the heat resistant layer and exposed to the accommodating space. A volumetric density of the heat resistant layer is lower than a volumetric density of the flame retardant layer.

What is claimed is: 
     
         1 . A cabinet for an energy storage apparatus, comprising:
 a concrete main body comprising a plurality of walls to form an accommodating space;   a heat resistant layer disposed on one or more inner surfaces of the plurality of walls in the accommodating space; and   a flame retardant layer disposed on the heat resistant layer and exposed to the accommodating space, wherein a volumetric density of the heat resistant layer is lower than a volumetric density of the flame retardant layer.   
     
     
         2 . The cabinet according to  claim 1 , further comprising:
 a locking member penetrating the heat resistant layer and an opening of the flame retardant layer and locked to the concrete main body; and   a heat resistant structure covering the opening of the flame retardant layer and exposed to the accommodating space.   
     
     
         3 . The cabinet according to  claim 2 , wherein the heat resistant structure comprises:
 a heat resistant locking member locked to the locking member; and   a heat resistant sealing structure covering the locking member and filled in at least one space between the opening and the locking member.   
     
     
         4 . The cabinet according to  claim 3 , wherein the heat resistant sealing structure comprises:
 a heat resistant filler covering and contacting the locking member; and   a heat resistant paste covering and contacting the heat resistant filler.   
     
     
         5 . The cabinet according to  claim 2 , wherein the concrete main body comprises a protruding structure protruding from at least one outer surface of the plurality of walls, and the locking member extends into the protruding structure. 
     
     
         6 . The cabinet according to  claim 1 , further comprising a locking mechanism locking the heat resistant layer and the flame retardant layer to the concrete main body, wherein the locking mechanism comprises at least a heat resistant material. 
     
     
         7 . The cabinet according to  claim 6 , wherein the locking mechanism comprises a stud and a nut, the stud screws and locks the flame retardant layer, the heat resistant layer, and the concrete main body, the nut is screwed to the stud and abuts against the flame retardant layer, and the nut comprises the heat resistant material. 
     
     
         8 . The cabinet according to  claim 7 , wherein an end portion of the stud passes through a screw hole of the nut, and the cabinet further comprises a heat resistant filler covering the end portion. 
     
     
         9 . The cabinet according to  claim 8 , further comprising a heat resistant protection layer covering the heat resistant filler and exposed to the accommodating space. 
     
     
         10 . The cabinet according to  claim 1 , wherein a heating linear shrinkage rate of the heat resistant layer is lower than a heating linear shrinkage rate of the flame retardant layer. 
     
     
         11 . The cabinet according to  claim 1 , further comprising a door pivotally connected to a side edge of an opening of the concrete main body, wherein the door comprises a concrete layer, the flame retardant layer is further disposed on the concrete layer of the door, and the heat resistant layer is further disposed between the flame retardant layer and the concrete layer. 
     
     
         12 . A cabinet for an energy storage apparatus, comprising:
 a concrete main body comprising a plurality of walls to form an accommodating space;   a heat resistant layer disposed on one or more inner surfaces of the plurality of walls in the accommodating space; and   a flame retardant layer disposed on the heat resistant layer and exposed to the accommodating space, wherein the flame retardant layer comprises a plurality of flame retardant plates continuously connected to each other, and at least one connection interface between the flame retardant plates is a non-planar surface.   
     
     
         13 . The cabinet according to  claim 12 , wherein the at least one connection interface between the flame retardant plates has a stepped section cross-sectional profile. 
     
     
         14 . The cabinet according to  claim 12 , wherein the flame retardant plates comprise a first flame retardant plate and a second flame retardant plate, a first side surface of the first flame retardant plate comprises a first flange, a first side surface of the second flame retardant plate comprises a first groove, and the first flange is disposed in the first groove to connect the first flame retardant plate and the second flame retardant plate. 
     
     
         15 . The cabinet according to  claim 12 , wherein the flame retardant plates comprise a first flame retardant plate and a second flame retardant plate, a first side surface of the first flame retardant plate comprises a first stepped structure, a first side surface of the second flame retardant plate comprises a second stepped structure, and the first stepped structure is engaged with the second stepped structure to connect the first flame retardant plate and the second flame retardant plate. 
     
     
         16 . The cabinet according to  claim 15 , further comprising a locking mechanism penetrating the first stepped structure, the second stepped structure, and the heat resistant layer to lock the heat resistant layer and the flame retardant layer to the concrete main body, wherein the locking mechanism comprises at least a heat resistant material. 
     
     
         17 . The cabinet according to  claim 12 , wherein the flame retardant plates comprise a first flame retardant plate, a second flame retardant plate, and a third flame retardant plate, and a first connection interface between the first flame retardant plate and the second flame retardant plate and a second connection interface between the first flame retardant plate and the third flame retardant plate are adjacent to each other and are both non-planar surfaces. 
     
     
         18 . The cabinet according to  claim 17 , wherein a first flange of the first flame retardant plate defines a first stepped cross-sectional profile of the first connection interface, a second flange of the first flame retardant plate defines a second stepped cross-sectional profile of the second connection interface, and an extension length of the first flange is greater than an extension length of the second flange. 
     
     
         19 . An energy storage apparatus, comprising:
 a cabinet, comprising:
 a concrete main body comprising a plurality of walls to form an accommodating space; 
 a heat resistant layer disposed on one or more inner surfaces of the plurality of walls in the accommodating space; and 
 a flame retardant layer disposed on the heat resistant layer and exposed to the accommodating space, wherein a volumetric density of the heat resistant layer is lower than a volumetric density of the flame retardant layer; and 
 at least one battery system fixedly connected to the cabinet. 
   
     
     
         20 . The energy storage apparatus according to  claim 19 , wherein the flame retardant layer comprises a plurality of flame retardant plates continuously connected to each other, and at least one connection interface between the flame retardant plates is a non-planar surface.